Finding the Third Proportional to 63,792 and 139,680

Step by Step Solution

1. Step 1: Write the proportion equation
   63,792 : 139,680 = 139,680 : x
2. Step 2: Convert to fraction form
   63,792/139,680 = 139,680/x
3. Step 3: Cross multiply
   63,792x = 139,680 × 139,680
4. Step 4: Simplify right side
   63,792x = 19,510,502,400
5. Step 5: Solve for x
   x = 19,510,502,400/63,792
6. Step 6: Final answer
   x = 305,845.60